Extra fees charged without explanation

Worse service ever. I called to reconnect my service and to find out why every month my billing amount changes. The consultant "Zandi" ref: 259941_i44 explained that I am charged for my subscription + extra view and an additional R100 for access fee because of my pvr decoder. I told her I never had one and since connecting an additional decoder this fee was never charged. She checked and confirmed that 2 months ago this fee was not charged. I explained how that I never called them in between so wanted to know how they change details without confirming. Her response was that it was a system fault but cannot say if it will be corrected. I paid more than what I should but still my services are suspended. The Facebook account stopped replying when questioned about this. They asked for my details but does not bother assisting further. This is really the worse costumer service ever. No one taking responsibility to find out what happened or willing to assist. Just praying for fibre in my area to cancel this service as they really do not care about customers but just the funds. I asked to be sent a full billing for the past 6 months but no one can provide it and does not bother to give a reason why.